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Rajah, many thanks for your comments. In fact not all of my plants do look too happy right now. They are back on track after fighting a very bad mite infestion on some of them. Beeing too small to see those mite even with a magnifying glass, it took some time before knowing what the problem was. I plan to put up pictures on my site, when I've finally won.

N. macrophylla grows much easier for me than N. rajah under similar conditions. It likes very high lightlevels but that is not unusal for highland Nepenthes. N. rajah in contrary is more happy with much less light - according to my experience.

I was just wondering why the waxy zone of the interior of your N. macrophylla pitcher has colored up? Do you give it lots of light? All the pitchers I have ever seen have white interiors. Here are a couple of shots of a plant that looks to be about the same age as yours:

I have not had too much of a mite problem. Occasional outbreaks on some of the thin leafed lowland Nepenthes and Heliamphora. I have had excellent control with no visible side affects with Talstar in a flowable form.
Tony

That's an open ended question! Umm.. In brief, my plants are gorwn in a 50/50 mix of coco-peat and chopped coco-husk. They are heavily watered 2 times per day with pure water. Temperatures for the highlanders range between about 13 deg C and 30 deg C. Lowlanders get between about 24 deg, C and 36 deg. (Sorry, I only know the dg. C scale and not deg. F equivalents). They are root fed only and are under about 75% shade. Relative humidy is never less than 70% and usually in the upper 80's.

Whilst we're on the subject of root feeding, I took a photo of a N. lowii that is exhibiting reasonably good growth rate. Someone asked to see this photo on another thread a couple of weeks ago, but I didn't have it to hand at the time. Here it is:

and here's an N. hamata clearly showing the osmacote pellets on the top of the media: